Home / 261,046.20-391,569.30-219,711.90

Finding the Fourth Proportional to 261,046.20, 391,569.30 and 219,711.90

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Solution

The fourth proportional to 261,046.20, 391,569.30 and 219,711.90 is: 329,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,046.20 : 391,569.30 = 219,711.90 : x
  2. Step 2: Convert to fraction form
    261,046.20/391,569.30 = 219,711.90/x
  3. Step 3: Cross multiply
    261,046.20x = 391,569.30 × 219,711.90
  4. Step 4: Simplify right side
    261,046.20x = 86,032,434,884.67
  5. Step 5: Solve for x
    x = 86,032,434,884.67/261,046.20
  6. Step 6: Final answer
    x = 329,567.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.